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Philip at N. Salinas High uses a coin on the ball. Works well. No separation
there.
A reasonable height is one meter. So speed ~ 4.4 m/s (E principle easier
than kinematics) Re then ~ 69k, therefore, Cd ~ 0.5
Drag then v. ~ 0.55N Mass of basket ball ~ 0.625 force then v. ~ 6N so
ignorable (treat as free fall) E at impact v. ~ 6 J.
If coefficient of restitution v. ~ 0.85 then initial speed after impact is ~ 3.74
m/s
mass one cent 2.5 g momentum principle > 900 m/s
bc amateur physicist and thinks something wrong there.
done v. hurriedly
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